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Oxidized PAC-quinone imine metabolites have also been shown to form GSH-conjugates which inhibit glutathione reductase (GR): the decreased activity of GR hampers the detoxification and antioxidant capacity of the GSH-GSSG cycle, further aggravating the pro-oxidative status in the cell (Ndlov et al., 2014)
Furthermore, since GSH causes a switch from eumelanin to phaeomelanin, it may increase UV photosensitivity, DNA damage and skin cancers in previously protected populations
This makes B12 therapy more effective for each patient
Placental corticotropin-releasing hormone (CRH), spontaneous preterm birth, and fetal growth restriction: a prospective investigation
B12 Deficiency and Weight Gain: What You Should Know Feeling sluggish, gaining unexplained weight, or finding it hard to stay motivated